IOWA CITY, Iowa (AP) -

An eastern Iowa man has been accused of trying to blackmail administrators who oversee a major high school football program.

Iowa City police say Daniel Lee Stone, of Solon, was arrested Wednesday after DNA evidence linked him to several letters that allegedly threatened administrators at Regina High School in Iowa City.

Administrators say they received letters last summer that claimed the school's football coaching staff was providing performance enhancing drugs to the student athletes. The letters made several demands in exchange for silence on the allegations.

An investigation into the letters' allegations turned up nothing.

Stone has been arrested on suspicion of third-degree harassment. He faces an additional charge of inference with official acts stemming from the time of the arrest.